Is Obama Eligible to be president?

As we all know Obama is our current president. And after showing his birth certificate it was brought up the fact that it could be a fake. One thing i was told that back then they put for race on old birth certificates the word "*****" on the birth certificates and not African. (from what ive herd i cant find any information on that or how fair back that was from). Also said fake by some people who used Adobe Illustrator. (A program that is very nice and with Illustrator and Photoshop you could make a fake one if you wanted to i know that for fact, I fiddle with those programs myself they are capable of a lot of features) They showed that some writing did not match up etc. After this not to long ago after all the talk about the birth Bin laden dies. People say it was a cover up and yes it did turn everyone's heads off my subject dont you think? Plz watch this video and help peace it together with me no its not my channel i just want to know whats up and im a bit lost and confused. http://www.youtube.com/watch?v=h8_AVq6prCs&feature=channel_video_title